Indian Society of Genetics & Plant Breeding

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Evaluation of rice germplasm under jhum cultivation in North East India and breeding for Aluminium tolerance

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In North Eastern (NE) region, Aluminium (Al) toxicity is a
major problem due to acidic soils. Shifting (Jhum)
cultivation of rice is a primitive mode of agriculture prevailing
in the hills of the NE region. The present study was carried
out to screen a set of 67 genotypes for agronomic traits,
yield and characters related to Al tolerance. The
components of variability revealed high magnitude and
highly heritable nature of variation. Heritability was found
high for ear bearing tillers, panicle length and yield per ha.
Genetic advance over mean was also high for all the traits
except for days to 50% flowering. Significant correlations
were observed for traits evaluated in this study. The
clustering pattern as revealed by dendrogram, based on
average distance classified the accessions into three
groups. Principal component analysis revealed that the first
three most informative components accounted for 56% of
the variance. Several high performing genotypes like, Lengja
and Koyabo were identified suitable for acidic soil
conditions of Jhum areas.

Keywords: ICAR Research Complex for NEH Region, Umiam, Meghalaya 793 103

Info

Year: 2013
Volume: 73
Issue: 2
Article DOI: 10.5958/j.0975-6906.73.2.022
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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